This is a great and simple salad - this has become one of my go-to work lunches. Plus, you can use it as a great base - and add/ substitute diced cucumbers, olives, peppers, depending on what you have at home. I also have used freshly grated Parmesan instead of the feta. So quick and healthy to bring in to work!

Actually, plastic is bad as well. There are many plastics that deteriorate over time and leak chemicals into the food contained in the containers. As well, microwaving in such containers is a very bad idea as this increases the speed of deterioration of the plastic and allows even more chemicals to reach your food.

Speaking of aluminum, I was hoping that the lunchbox was stainless steel, and therefor corrosian resistant to salad dressing and the like. Personally, I prefer plastic to the leaching and corrosion products from aluminum!